Inteelocking bolt



(No Model.)

2 Sheets-Sheet 1. T: J:

INTERLOGKING BOLT.

Patented Apr. 26, 1887 z. W Thomas J Bush 51;, WWW

, elevation of the 19, l882,and 301,668,

THOMAS J. BUSH, OF LEXINGTON, KENTUCKY.

INTERLOCKING BOLT.

SPECIFICATION forming part of Application filed Juy 21. 1884. Serial No. 138,420.

Letters Patent No. 361.985, dated April 26, 1887.

(No model.)

To all whom it may concern:

Be it known that I, THOMAS J. BUSH, a citi- Zen of the United States, residing at Lexington, in the county of Fayette and State of Kentucky, have invented certain new and useful Improvements in Interlocking Bolts, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention is an improvement upon the devices shown and claimed in Letters Patent Nos. 257,287, May 2, 1882, 264,622, September July 8, 1884, heretofore granted to me; and it relates to new and useful improvements in interlocking bolts, the details whereof will be hereinafter fully explained. 7

I11 the drawings, Figure 1 is asectional elevation of a railway cross-tie and of a fail secured thereto by a pair of my improved interlocking bolts. Figs. 2 and 3 are views in bolts, showing the interlocking parts in detail. Fig. 4: is an inverted plan view, the bolts being slightly separated. Fig. 5 is an inverted plan view of the bolts as in terlocked when in use. Fig. 6 is a plan view of one of the washers interposed between the heads of the bolts and the material to be secured. Figs. 7 and 8 are sectional elevations similar to Fig. 1, illustrating modified forms of my invention. Fig. 9isadetailviewshowing the method of locking the bolts shown in Fig. 7. Fig. 10 is a detail of one of the bolts shown in Fig. 8-, both being of the same form. Fig. 11 is aview of the wedge used to lock the bolts shown in Fig. 8; and Fig. 12is a plan view of the bolts shown in Fig. 8, illustrating the method of securing them when in use.

Similar letters denote like parts.

A represents a railway cross-tie. B is a rail secured thereto by bolts 0 and D, which are inserted in holes bored diagonally into the cross-tie, so as to intersect at the point G within the same. The bolts are screw-threaded at their outer ends, and each is provided with a suitable nut, between which and the rail (or other object to be secured) is interposed the washer H, which may be of any desired outline, it only being essential that it be thicker on one side than on the other, so that the pressure of the diagonally-inserted bolt will be distributed horizontally and the rail be securely and rigidlyheld in position.

These bolts are adapted to unite railway rails and cross-ties in the most secure and permanent manner, and also an infinite variety of other objects-such as bridge-timbers, scaffolding, and other structures-whether temporary or permanent, where great strength is required,and where, also, the removability of the fastenings is of advantage.

With the straight bolts shown, when they are used to secure rails to cross-ties, I prefer to form a transverse depression, h, in the un der side of the washer H, so that it will lap over the rail and be prevented from turning in any direction or slipping forward toward the web of the rail.

The bolts G and D are preferably straight, and for the purpose of securing railway-rails are usually between six and eight inches in length. They are inserted in holes previously bored in the cross-tie, and interlocked, and thereby secured therein in the following manner:

The bolt 0 is faced 0d at. one side a short distance upward from its lower end, as shown at d, and it is further cutaway to form a comparatively shallow recess, E, which recess is transverse to the upper part of the faced-off portion.

The bolt D is not faced off like the bolt C, with which it interlocks, but is provided with a transverse recess, E, similar in shape and position to the recess E therein, and at the lower corner of the recess E, I cut away an additional portion of metal,forming a smaller recess, 6, at right angles to the recess E, the object and effect of which is to afford a square shoulder for the lower corner of the recess of the other bolt to bear against.

In Figs. 8, 10, 11, and 12 I have shown another form of locking device, in which the recesses are similar to that lettered E in the bolt 0. They are alike on both bolts, the parts being pressed together and held in their locked position by a wedge, F, which is inserted in the hole behind either one of the bolts, forcing them together and securely locking them. The wedge is retained in position by the nut at the end of the bolt,and can be readily with to vided with a transverse recess, K, so that, hav- In testimony whereof I affix my signature in I 5 the notches, recesses, or slots at any desired GEORGE BIDDLE,

drawn when it is desired .to unlock and renot being absolutely necessary to locate them move the bolts. 7 at right angles thereto.

Figs. 7 and 9 show another modification, in Having thus described my invention, what which the bolt J is apertured or slit atj, near I claim is 20 5 its lower end, instead of being merely recessed, The straight bolts 0 D, notched to interlock as in the other forms shown. The lower end with each other, in combination with the he of the second bolt of this pair is faced oft on A, having diagonal intersecting holes, and the opposite sides, so as to enable the bolt to pass blocks H, against which the nuts of the bolts through the aperture J, and it is further proare secured, substantially as described. 25

ing been inserted in the said aperture or slot, presence of two witnesses.

when the nut of the bolt J is ti htened both bolts willbe securely looked. a THOMAS BUSH In every form of bolt I contemplate placing Witnesses:

angle with respect to the body of the bolt, it HENRY LABARRO JAYNE. 

